Europe in the year 2025: after a pandemic has wiped out almost the entire world's population, only a few men remain, roaming the streets and committing heinous acts of violence with impunity. The only hope of saving humanity rests on a cowboy named Dog and Mia, the last pregnant woman in the entire world. Together they must take a life-threatening trip through devastated lands to reach a laboratory where a group of scientists have apparently developed a cure for the deadly virus.